You sent 100 units. Amazon logged 95.
Every FBA shipment ends with a count, and that count is Amazon's. Inbound tracking pulls your shipments daily, puts what you sent next to what Amazon says it received, and turns the gap into a claim you can file — for up to nine months after delivery.
We never create or change a shipment — sending inventory stays yours in Seller Central. Included in every OptimalCentral plan.
The count you never check, checked every day.
Reconciling a shipment means opening it in Seller Central and comparing two numbers by hand. Almost nobody does it, which is exactly why the money sits there.
Shipments in flight
What is on the way, where it is going, and how many units are riding on it — without opening the shipping queue.
Shipped vs received
Per shipment and per SKU, the two numbers side by side. Closed shipments sort by the size of the gap, so the worst one is always on top.
The gap becomes a claim
Missing units land on your Reimbursements page with case text ready to paste — after subtracting anything Amazon already reimbursed, so you never file a duplicate.
We check the count. You send the boxes.
This tool is read-only on purpose, and it is worth saying plainly why.
Creating shipments spends your money
Each confirmation in Amazon's shipment flow commits real cost: inbound placement fees charged per unit, plus whatever the carrier bills. Those are your decisions, made with your margins in front of you.
So we do not touch them
Optimal makes no write calls to your fulfillment account. Not for shipments, not for placement, not for transport. The one button here re-reads your data.
Which leaves us free to audit
An auditor that also books the freight is not an auditor. Ours only ever asks one question: does the number Amazon recorded match the number you sent?
Fair questions, straight answers.
What does inbound tracking show me?
Every FBA shipment from the last 180 days: status, destination fulfillment center, units shipped, and units Amazon recorded as received. In-flight shipments come first; closed ones sort by the size of the receiving gap.
Can Optimal create or send my shipments?
No, and that is deliberate. Every confirmation step in Amazon's creation flow spends your money — placement fees per unit plus carrier charges. What to send, where, and at what cost stays with you in Seller Central. We read the result and check the count.
What happens when Amazon receives fewer units than I sent?
Once the shipment closes, the missing units become a claim candidate on your Reimbursements page, after subtracting anything already reimbursed. You get case text with the shipment ID, both counts, and the documents the policy asks for. Filing stays your action.
How long do I have to claim a shipment shortfall?
Nine months from the verified delivery date — far longer than the 60 days you get for items lost inside a fulfillment center. Amazon also requires the shipment to show as eligible for investigation on its Contents tab first. That status is not in the API, so our case text reminds you to confirm it rather than pretending we checked.
How often does it refresh?
Daily, automatically, plus on demand. If a sync has not landed in 48 hours the page says so rather than showing stale counts as current — an unreconciled shipment should never look reconciled.
What do I need to connect?
Your Amazon Seller account, once, through the official Selling Partner authorization on the Connections page. Inbound tracking reads shipment data only.